Question

The pH of a 0.0001 M NaOH solution is (note: For strong bases such as NaOH, the hydroxide ion concentration is the same as the concentration

of the base)
10
5
а
Ob
о с
Od
3
8

Answer 1

pH = 10

Step-by-step explanation:

As the problem states, with strong bases the hydroxide ion concentration [OH⁻] is equal to the concentration of the base. That means that in this case:

• [OH⁻] = 0.0001 M

With [OH⁻] we can calculate the pOH of the solution:

• pOH = -log[OH⁻]

• pOH = 4

Then with the pOH, we calculate the pH of the solution:

• pH = 14 - pOH

• pH = 10